Sat, 14 Nov. 2020, 01:00 UTC — Sun, 15 Nov. 2020, 01:00 UTC 

On-line

Decompetition event.

Format: Jeopardy Jeopardy

Official URL: https://decompetition.io/

This event's future weight is subject of public voting!

Future weight: 25.00 

Rating weight: 25.00 

Event organizers 

Decompetition is an experimental CTF just for reverse engineers. Test your reversing skills against the systems languages of the twenty-first century: C, C++, Go, Rust, and Swift. Given only a binary and an interactive disassembly diff, how accurately can you recreate the original source code? Come see how your decompilation skills match up!

Prizes

All prizes are Amazon gift cards (values in USD):

First place: $500
Second place: $300
Third place: $200

Additionally, Vector 35 is donating Binary Ninja licenses (personal edition, one
license per team) for the first and second place teams!

Scoreboard

114 teams total

PlaceTeamCTF pointsRating points
1 Plaid Parliament of Pwning 6131.15050.000
2 Tea Deliverers 6123.17037.467
3 PwnThyBytes 4629.88027.212
4 0x02B375 4008.34022.594
5 bi0s 3977.55021.219
6 p4 3975.93020.379
7 b3y0nd_1nf1n1ty 3482.64017.772
8 STT 2973.23015.248
9 dotsu- 2813.37014.249
10 FAUST 2806.74013.945
11 kerouac 2417.39012.130
12 Black Bauhinia 2289.83011.420
13 the team about the team 1962.2709.924
14 Reversing.ID 1953.7809.752
15 watevr 1686.2708.542
16 speles 1611.3908.133
17 THS 1538.3107.743
18 h0twinter 1449.1707.298
19 SimonTime 1286.2806.561
20 user237 1232.8006.277
21 efiens_RE 1157.2705.909
22 someone2639 1136.8905.772
23 SomeTeam 1115.1105.634
24 0x90skids 912.2304.761
25 naf 744.9604.038
26 Midas 700.0003.816
26 tkoa 700.0003.816
28 magnum 658.3803.577
29 MGGA 657.4203.543
30 austun12 620.7603.365
31 Retr0id 585.4103.193
32 PEPE_BOYZ 550.1703.025
33 ByteForc3 545.4902.982
34 EL 535.3802.918
35 RPISEC 500.0002.753
35 pizarron 500.0002.753
37 team_tantei3 495.7802.697
38 אלוף 468.1602.567
39 c0d3_h4cki05_ 437.5202.425
40 Maple Bacon 433.5802.393
41 cSee 421.3002.328
42 gh 408.1202.259
43 r3v3ng3r 400.0002.212
43 D4mianWayne 400.0002.212
43 tuna99 400.0002.212
46 T35H 398.1502.167
47 cxp 386.9902.110
48 zako 374.8702.049
49 infuzion 373.3602.033
50 nnewram 357.9201.959
51 Goomball MacGyver 336.3101.862
52 Rocking Philosophers 335.3801.848
53 Beans 290.2801.655
54 #MongolianEmpire 279.1401.601
55 ZombieBot 275.1201.576
56 yonoi 262.9301.519
57 PARSECT 262.8601.510
58 noraneco 261.8201.499
59 K@i 252.7401.454
60 The WINRaRs 249.0401.432
61 >>= 247.1001.417
62 TUN2020 246.3601.408
63 田埂 239.0101.371
64 int80 235.2501.350
65 ddd 216.1301.266
66 EO 208.2001.228
67 Tango 200.0001.189
67 kvjbdkfjv 200.0001.189
69 CSFNinjas 190.2301.138
70 erikkabir 172.5301.061
71 onotch 172.4601.055
72 Syth 151.2100.964
73 justonetry 146.6700.941
74 KXTI_ARTYR 143.1900.922
75 PwnNinja 129.2300.860
76 abhay 122.9800.830
77 PwnaSonic 122.5000.824
78 forkbomb444 119.1800.806
79 wonderland 110.4600.767
80 gruf 103.8600.736
81 SenpaiTeam 81.9900.643
82 Everyone is god of food 76.1300.615
83 matfy 72.5000.597
84 BinaryLiberationOrganization 71.3200.588
85 0xdr1ft3r 71.2900.585
86 meow 47.3000.484
87 chrisbex 33.4700.424
88 Sec-Pol.Cdt 27.6400.397
89 TeamSalat 27.4700.393
90 peli_0991 26.5500.386
91 ThePseudoAdmin 22.8300.368
91 Lions 22.8300.368
93 whyMustIhaveAteamToPlay 22.8000.362
94 undappori&&chaaya 21.6900.354
95 #{`ls`} 19.5300.343
96 flag{}___Orz 19.2800.339
97 RE 19.0200.335
98 Gautam Kumar 18.0000.328
98 Expl0itTh3W0rld 18.0000.328
98 Zyrfex 18.0000.328
98 madlads 18.0000.328
102 KXTI_PROC 13.2100.299
103 KXTI_MARMELAD 12.0900.292
104 Noobs_now 11.8500.289
105 mikejam 10.8400.282
106 Celesian 10.2400.278
107 Dokko 10.1200.275
108 j4h4k 7.2600.261
108 hackbyr0k 7.2600.261
110 RX 6.8000.255
111 FIZL 5.9500.249
112 KXTI_Update 4.8300.243
112 Algerian Anarchists 4.8300.243
112 B.R.A.V.O 4.8300.243
astroboyNov. 15, 2020, 9:41 a.m.

really interesting ctf!


pwnninjaNov. 21, 2020, 1:16 p.m.

Can you guys release the source code for the website /webapp (Decompetition.io) ?